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7-Zip vs lessmsi: catalog facts
7-Zip	lessmsi
Free Free software with open source. The site states you can use 7-Zip on any computer…	Free Free to use with source on GitHub.
Windows, Linux, macOS, Command line	Windows, Command line
High compression ratio in the 7z format with LZMA and LZMA2 Packs 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM and unpacks dozens more, including RAR, ISO, MSI and…	Extracts MSI contents without running the installer Both a graphical and a command-line interface
The Linux and macOS builds are console versions; there is no official graphical app on those platforms The Windows interface has not changed much in twenty years	Windows only Limited to Windows Installer packages
Downloadable app	Downloadable app
Open source	Closed source
License: LGPL-2.1	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.